Improvement in hydraulic presses



c. PEPER.

Hydraulic-Presses. N0.163 ,606. Patented May25,i875.

Wifnessas: flaw anion THE GRAPHIC CO.PHOTD -LlTH.39 8z41 PARK PLAGLNYUNITED STATES PATENT OFFICE.

CHRISTIAN PEPER, OF ST. LOUIS, MISSOURI.

IMPROVEMENT IN HYDRAULIC PRESSES.

Specification forming part of Letters Patent No. 163,606, dated May 25,1875; application filed April 19, 1875.

To all whom it may concern:

Be it known that I, CHRISTIAN PEPER, of St. Louis, county of St. Louisand State of Missouri, have invented an 1 mproved Hydraulic Press, ofwhich the following is a specification:

This invention relates to hydraulic presses that have the packing in theram, and is designed to obviate the use of the ordinary screw means usedto retain the ram in a true and stationary position, and to effect thesame ends in a more simple, ready, and effective manner.

Of the drawing, Figure 1 is my invention in perspective, Fig. 2 being aperspective of a modification thereof.

A is the cylinder; B is the ram; 0 is the platen. Said parts are allmade to operate as usual. My improved features are as follows:

I provide the ram B with a slot, I), which passes entirely through saidram, as indicated in Fig. 1. D and E are incline planes for purposes ofsustaining the ram. That of E rests by its base in the slot; that of Dserves as a follower, by means whereof the operator can follow up themovement of the ram, by inserting it in the slot to rest on that of E.The incline plane D is inverted when used so that the incline faces of Dand E come contiguous to each other, and the base of both being parallelat all points of insertion, the ram is consequently sustained in truevertical position. lVhen the ram is to be lowered the planes can beremoved out of ram. If desired, a key device, Fig. 2, can be used inplace of the incline planes. The key F I form to have varying offsetbearings, f, so that it can be inserted in varying positions in theslot, according to the heights assumed by the raising ram. It is onlynecessary, after pressure has been produced, to insert the key F, which,by its proper bearing f, fits in the opening presented by the slot b,out of or above the cylinder. The key thus passed through the slot hasits rest on top of the cylinder, and in this manner supports the ramstationary. When the ram is to be lowered the key is disengaged out ofthe slot or ram. A simple and effective means is thus provided to retainthe ram stationary, and rendering the pressure action more compact,uniform, and perfect.

NVhat I claim is 1. The key F, having offset hearings f, in combinationwith the ram B, having slot b, of hydraulic presses, for the purpose ofsupporting the ram stationary, substantially as set forth.

2. In a hydraulic press, the incline planes D and E, in combination withthe cylinder and platen, for the purpose of supporting the ramstationary, substantially as set forth.

In testimony of said invention I have hereunto set my hand. 7

CHRISTIAN PEPER. Witnesses:

WILLIAM W. HERTHEL, Guns. F. MEIsNER.

